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Finding the Fourth Proportional to 1,261.82, 1,741.41 and 702.41

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Solution

The fourth proportional to 1,261.82, 1,741.41 and 702.41 is: 969.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.82 : 1,741.41 = 702.41 : x
  2. Step 2: Convert to fraction form
    1,261.82/1,741.41 = 702.41/x
  3. Step 3: Cross multiply
    1,261.82x = 1,741.41 × 702.41
  4. Step 4: Simplify right side
    1,261.82x = 1,223,175.09
  5. Step 5: Solve for x
    x = 1,223,175.09/1,261.82
  6. Step 6: Final answer
    x = 969.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.